Resilient roller



Aug. 3, 1943. P. A. SOLEM RESILIENT ROLLER Filed Dec. 12, 1940 Patented Aug. 3, 1943 U T D PATENT orrrcr v V V j "iz'gszeovc l some RoLLEn u eter nfs'rm, Rockford, Hf.

misses-mother 12, 1940?, Sorialstress 7 screws. (91. m l 2 50) This iirventiurr relates to resilient rollerswespe-i cially designed: tor: use insecti'onal 'feexzt rolls on: woodworking machines, such oshplnnersa, lant:

adapted to be usedi'wherever rell'ers h'e trmg sunila r characteristics maly' be desired. The pres ent construction moreispeci fioalwstateu involves improvements on "thats disolosed :m my tiopamding application Serial No; 2331115 fictober "T,

13933", new Patent No-..'2' ,-254,50*t o't' Sept. 2 194 1 In the earlier oppucstion disclosed a three-- piece. rubber 'cuslri'onerlr- :rouer h vfng a continuous "rubber cushioning core; ro connecting 'wairrcrwb; 'uetween the h parts; the core beingfyieldeble filr'ebtl'fll ll,

that is to say, torsronalu in either direction as:-

well en's-radially airid' la-terailly in either oirectron the core being molded "place betweerutne not and rim and bonded to these parts by vu emzetron, so that. any portion of the core. that; "be stretohec l or compressed, corona upon the. relative movement: between "the. hub rim.

parts. V

The present invention pmmeessrotlsr ot the same general type but improved in these respects: I

(1:) The hub and rim pal-ts are or laminated construction, each made from "a, series: of steimpet l sheet metal rings riveted or otherwise suitably secured toegtl ier; whereby rollers or any desired width may be made up 'witlithe use: of 'mo'reor less: rings; with the further advantage thttt "a cheaper and more desirable construction'is' ob tai-Ii'ed; l

' (2) The rings forming the hub and rim'partsi have radically projecting: teeth. provided on their outer and inner peripheries, respectively, the teeth on the hub rings-extending to a radius beyond a circle defined by the inner ends of the: teeth on the rim rings, sothat some portions of the rubber core are compressed and other portions stretched between the inner-and outer teeth when the roller i sunder torsional'load, the rubber core being 'thusused to best advamtage and" notbein'g s'ukijected to twisting strains a-pt either to? cause the core to tear loose from the rim: and

hub or make it break clown internally; and

(3) The core has continuous inner and outer Wallsof scalloped form to f'oll'o'w the toothed congive being variable'by increasing thewcross-seo tion otthefweb sportiohs and accordingly cutting down'thesizeof theopeningtsin the corei l The invention i's'ilmstrated -in the accompany Figural: is a. fragmentary sectional View or planer equipped with msectional fr'ont feed roll" made up of resilient rollers made :in accordance:

with-my invention; ,7 c..

Fig. 2iisa- Viw of 'a: portion of the sectional feed roll. showing onerof ithe rollers in; devotion and the other in section on the broken line 2*2 With the result that's, 'IOHEI' 21S; obtained the rim:

; s a some] the ome s-:3: otl' ig. 2

showing onexofigthe rollers in: sicle-elevation but with one thereof "broken: st-way and; shown tnsectiomond; w

Fig. 4 is another View smote trig-.5 tat showing thehmm of the roller radial-1U :displaeed relativeto the rim? to: omex-treme position; thus:

distorting thembbercormxi. l The same reference: numerals aire applied to corresrionding'tparts throughout the views;

1 have tllustraltedrmy invention as appiieetof a sectional front feed roll: i inarplan-er where the torsional,v radial, 'alnd' lateral give of the indi vidu'al resilient rollers 56' used in making up the feed roll serve: to'meet all requirements, forefflciently f ceding narrow stock; of "carrying thick nesses and shapes to: the cutter head 1 pasta chip breazkeris However; it WilLsQ n-appear that; resilient rollers having the novel characteristics t 0517116 ones herein disclosed are-adaptedtor at wide verietmof purposes when made difieren-t constructed. along the lines herein disclosed wherever a-rubbcrcore is suitable between the howl-0 and rim Hottheroller.

The: l:0;, in accordance with my invention,

is or laminatedconstructionand'made up or a number of stomped. sheet metal rings 1-2 riveted, welded; or otherwise suitably secured! together" to form. 81- umtary hubpart adapted to-be keyed, .as indicated at t3=,,'to=theshaft1 4., While-theshaft u :inthe case of. a feed roll is the driving shaft and =d'riv is accordingly transmitted from; the hub Hi of'e'alch roller through "the rubber-core; 9 towthe: l I-',.-*shoulct'be understood that; in certain other applications? ofi invention: the

' and rim parts.

direction of drive may be reversed and in still other applications the rollers maybe mounted to rotate freely with respect to the shaft or axl on which the same are mounted. The'rim l I in like manner is of laminated construction, being made up of a number of stamped sheet metal rings l5 adapted to be riveted, welded, or otherwise suitably secured together, rivets being indicated at Hi. The laminated construction of the hub and rim makesfor flexibility in manufacturing,.inasmuch as rollers of any width desired can be furnished by adding or omitting laminationsthere being a further advantag from the standpoint of decreased cost and greater durability. The laminated hub and rim parts furthermore provide the desired roughness of surfaces which makes for better bonding of the rubber thereon. A much better bond between the rubber and the metal parts also results from the fact that the rings 12 in the hub have radially outwardly projecting teeth I! provided'thereon and'the rings 15 forming the rim have radially inwardly projecting teeth l8 provided thereon,'thus greatly increasing the amount of bonding surfaces over what would be aifordedin ordinary circular hub The teeth H, as clearly indicated in Fig. 3, extend beyond the radius of the circletouching the innerends of the teeth l8,-so that some of thos portionsof the'c'orea'coming between the teeth I! and 18- are. compressed and the'rest are stretched when the shaft l l is driven and there is any resistance to turning of the roller, as, for'example, might be offered by a piece of stock contacted by the rim H, in thecaseof a sectional feed roll. The core 9 is preferably ofv rubber molded into'the rollerand vulcanized to the outer periphery of the hub IE3 and inner periphery of the rim l I. A good bond is obtained by brass plating the parts and'then, after the ,core is molded in place, it is joined to the brass plated rim and-hub by vulcanization. The core is molded to provide an inner peripheral wall 19 with scallops 20 to conform tothe contour of the hub l0 and an outer peripheral wall 2! with scal-' lops 22 therein to conform to the innerperiphery of the rim II, the scallop portions 20 and 22 being connected by web portions .23 molded integral with the walls I9 and 2i. The walls l9 and 2| extend substantially the'full width of the accordingly decreasing or increasing the voids left therebetween in the core, depending upon the operating characteristics desired. 'The web portions 23 may also be increased or decreased in width in relation to the width of the Walls l9 and H, as desired. I

In operation, the rollers when used in multiple in building up a sectional feed roll are assembled on the shaft M with spacing washers 25 between the hubs thereoflso that the rims of the rollers are free to yield laterally. The core Spermits restrained universal movement of the rim H with respect to the" hub ID. The core is yieldable'in all directions and, although I have mentioned only. torsional, radial; and lateral yieldability, because it is in those respects that the roller is specially adapted for use in asectional feed'roll in a planer or other woodworking machine, it should be apparent that the rim 'I [may also be movedcore 9.

axially in either direction with respect to the hub I0 by virtue of the lateral yieldability of the Radial yieldability of the rollers is illustrated in Fig. 4 in which the hub I0 is shown in an extreme position of radial displacement and all of the web portions 23 are accordingly distorted, some being compressed and others stretched. Inall cases the stresses set up in the core incident to any deflection of the rim relative to the hub are :distributed substantially throughout the entire circumference of the core. An important advantage resulting from the provision of the teeth I! and I8 is that most of the stresses set up in the core are along the longitudinal axes of the web portions, that is, the webs are compressed or stretched and there is accordingly less likelihood of the core tearing loose from the hub .or rim than where the outer periphery of the hub and inner peripheryof the rim are of circular form without any radial projections like the teeth I! and 13. With the present construction I do not depend entirely upon the strength of the resilient material itself, because even though the rubber should work loose from the metal at one or, more points, the roller. will continue giving service, the only effect being the diminished pressure obtainable between the roller and the material being operated upon, it being obvious that when the rubberseparates from the metal at a certain point-the benefit of th stretching action is lost, although compression of the core at that point is still possible. The roller is preferably constructed with an odd number of projections H and i8 o-n'the hub and rim, and, of course, the number of projections may be increased or decreased for various diameters and depending upon the amount of, yield and flexibility desired.

It is believed the foregoing description conveys a good understanding of the object and advantages of my invention. The appended claims have been drawn to cover all legitimate modifications and adaptations.

I claim: r

l. A resilient roller of the character described comprising a laminated hub member, a laminated rim member normally concentric with the hub, said hub and rim members being built up to a desired greater or smaller width with more or less ring-shaped laminae secured together in stacked relation to form a unitary hub member and a unitary rim member, and an annular rubber core between and connected circumferentially with the hub and rim members on the outer periphery of the hub member and inner periphcry of the rimmember to transmit drive resiliently from one of said members to the other while permitting universal deflection of the rim with respect ,to the hub under restraint of the compressed,'stretched, or otherwise distorted portions of said core, the laminae of said hub and rim members providing multiplicities of interstices therebetween into which the rubber of the core protrudes to make a better mechanical, driving connection between the core and said hub and rim members.

2. A resilient roller of the character described comprising a hub member having a plurality of circumferentially spaced radial projections, a rim member normally in concentric relation with the hub having a plurality of radial projections disposed between the radial projections on the hub, and an annular rubber core between and con nected circumferentially with the hub and rim members on the outer periphery of the hub memher and inner periphery of the rim member, said core being formed to provide radially spaced inner and outer circumferentially extending walls profiled to define recesses in the inner and outer peripheries of the core receiving the radial projections on the hub and rim members, respectively, and said core being further formed to pro- "vide circvmierentially spaced web portions connecting the aforesaid inner and outer walls to transmit drive resiliently from one of said hub and rim members tov the other while permitting universal deflection of the rim with respect to the hub under restraint of the compressed,

stretched, or otherwise distorted Web portions of said core, said web portions extending in trans verse relation to the radial projections on the hub and rim members and being normally spaced radially from the radially innermost portions of the inner wall and from the radially outermost portions of the outerwall of said core;

3. A resilient roller of the character described comprising a laminated hub member having a plurality of circumferentially spaced radial projections, a laminated rim member normally in concentric relation with the hub having a plurality of radial-projections disposed between the radial projectionson the hub, and. an annular rubber core between and connected circumferentially with the hub and rim members on the outer periphery of the hub member and inner periphery of the rim member, said core being formed to provide radiallyspaced inner and outer circumferentially extending walls profiled to define recesses in the inner and outer peripheries of the corereceiving the radial projections on the hub and rim members, respectively, and said core being further formed to provide circumferentially spaced web portions connecting theaforesaid inner and outer walls to transmit drive resiliently from one of; said hub and rim members to the other while permitting universal defiectionof the rim with respect to the hub under which the rubber of the core protrudes to make a better mechanical driving connection between the core and said hub and rim members.

PETER A. SOLEM. 

